History of computing Essay

Way back in archeozoicish history, when people relied primary(prenominal)ly on their brains to run calculations, people use their fingers, pebbles, and tally sticks for com barfe purposes. Various attempts were made to build general-purpose programmable computers from the same mechanical devices used in calculators. But the problems posed by the leave out of technology at the time were not satisfactorily solved until the introduction of electronic computing techniques in the mid-20th century. Between protoactiniums invention and around 1820 on that point were about 25 manufacturers of calculating machines nearly of them were the work of ane man.Few of them worked mightily and even less actually reached the manufacturing line. In the mid-19th century Charles Babbage, a visionary British mathematician at Cambridge University, designed the outset computers to exercise multistep operations automatically. The technologies were entirely mechanical. He called this depression computing machine the inconsistency Engine, and it was mean to compute and print mathematical tables automatically. The Difference Engine performed barely one arithmetic operation addition. Babbage invented a small package of his initiatory Difference Engine in 1832, which served as a demonstration prototype.The first widely known general-purpose electronic computer was the Electronic Numerical integrator and Calculator (ENIAC) that John W. Mauchly and J. Presper Eckert built at the University of Pennsylvania. The primary motivation for the ENIAC was the need to construct ballistic tables for the U. S. Army. Work began on the ENIAC in 1943 and in 1946 it was completed. It was an enormous machine measure about 30 tons and pickaxe a 30 by 50 foot room. It contained 1,500 electromechanical relays and all over 18,000 inanity tubes and when it was switched on it consumed 150,000 watts of energy.Despite its enormous surface it stored only the equivalent of 80 characters of in struction. However, it was advantageously faster than any previous computer. The persuasion of storing programs and their data in the same high-velocity memory the stored-program concept was first put forth by von Neumann in a publication entitled, First potation of a Report on the EDVAC (Electronic trenchant Variable Computer). The IAS machine in its boilersuit design is quite modern, and can be regarded as the prototype of most subsequent general-purpose computers.It had the general structure picture in Figure 4. It had a processor (Central Processing Unit) for executing instructions, a main memory for storing active programs, a second-string memory for backup storage, and miscellaneous input-output equipment. The IBM PC series was introduced in 1981 and quickly became the de facto pattern for this class of machine. IBM made a briskness decision by making the architecture of the PC open, meaning its design specifications were procurable to former(a) manufacturers of c omputers and software.As a get out of this decision the IBM PC became real common and many versions of it, PC clones, were produced by others. many another(prenominal) other significant achievements have come aboutred in the PC era and continue to occur with the widespread use of the profits and meshinged computers. present are a few other notable historical achievements having to do with PCs o 1976 The Cray 1 Supercomputer was the first commercially developed supercomputer. It contained cc,000 ICs and was cooled by Freon. o 1977 Apple II computer introduced.o 1979 Commodore Pet released, with 1 MHz computing power, 8K RAM, cassette deck, and 9 supervise displaying monochrome text. o 1979 The compact turn was invented. o 1982 The TCP/IP network communications protocol was established and the Internet was formed as a connected set of networks using TCP/IP. o 1982 Commodore 64 released, costing just i 595. o 1982 Compaq releases their IBM PC compatible, the Compaq Po rtable. o 1983 The IBM XT is released. This machine had a 10MB hard disk, 128KB of RAM, one floppy drive, a mono monitor, and a printer, all for i5000.What a bargain o 1984 Apple Macintosh released. o 1985 Microsoft Windows launched, plainly not really widely used until version 3 in 1990. o 1987 IBM introduced its PS/2 System which was very successful, selling over 2 zillion machines in less than 2 course of instructions. o 1989 The World Wide Web (WWW) is invented by Tim Berners-Lee who saw the need for global reading exchange that would allow physicists to collaborate on research. The Web was a result of the integration of hypertext and the Internet.Hyperlinked pages could not only provide information but could provide transparent regain to other pages of information as intimately as other Internet facilities much(prenominal) as ftp, telnet, Gopher, WAIS, and USENET. The Web started out as a text-only user interface but NCSA Mosaic, an early browser, later presented a graphical interface for it and its popularity exploded as it became accessible to the tyro user. The explosion of the Web started in pricy during 1993 and in a single year Web traffic increased by 300,000%. o 1990 Windows 3. 0 introduced by Microsoft.This graphical user interface OS offered genuine multi-tasking, meaning you could run multiple programs at the same time. o 1993 The Pentium microprocessor released by Intel. It was only available at that time in 60 and 66 MHz versions. o 1995 Windows 95 operating system released by Microsoft. o 1995 Pentium Pro microprocessor released. o 1997 Pentium MMX (166 and 200 MHz) released. o 1997 Pentium II (233, 266, and 300 MHz) released. o 1998 Windows 98 released. o 1999 Linux, a let off alternative operating system to Microsofts Windows, is estimated to be running on over 10 million computers worldwide.